![Salomon Kalou and Hertha Berlin team-mates quizzed over sleeping patterns as Bundesliga club install apps on players' mobiles | The Sun Salomon Kalou and Hertha Berlin team-mates quizzed over sleeping patterns as Bundesliga club install apps on players' mobiles | The Sun](https://www.thesun.co.uk/wp-content/uploads/2018/01/nintchdbpict000308164099.jpg)
Salomon Kalou and Hertha Berlin team-mates quizzed over sleeping patterns as Bundesliga club install apps on players' mobiles | The Sun
![Hertha Berlin's Salomon Kalou: "I love playing against Borussia Dortmund, I always score against them" | Bundesliga Hertha Berlin's Salomon Kalou: "I love playing against Borussia Dortmund, I always score against them" | Bundesliga](https://img.bundesliga.com/tachyon/sites/2/2019/03/lazaro_kalou.jpg?crop=0px,0px,1920px,1080px)
Hertha Berlin's Salomon Kalou: "I love playing against Borussia Dortmund, I always score against them" | Bundesliga
![Berlin's Salomon Kalou during the German Bundesliga football match between Hertha BSC and Hamburger SV at Berlin's Salomon Kalou during the German Bundesliga football match between Hertha BSC and Hamburger SV at](https://c8.alamy.com/comp/E9HB08/berlins-salomon-kalou-during-the-german-bundesliga-football-match-E9HB08.jpg)